Sbit me0 reg rework

Resolves issue #59 (closed) - Coherence between the GEx/1 and ME0 S-bit registers

Reworking of me0 sbit registers to match more closely that of GEx/1.

Changed registers to SBIT_ME0.OHx.CNT.xxxx -RESET resets sbit counters -SBIT_CNT_PERSIST controls counter persist, if '1' then counter needs manual reset -SBIT_CNT_TIME_MAX controls time for which counter accumulates before updating count register. Default set to 1 sec, so counter displays Hz. -CLUSTER_COUNT reads out sbit rate